131512254 has 32 divisors (see below), whose sum is σ = 266982144. Its totient is φ = 43182720.

The previous prime is 131512253. The next prime is 131512267. The reversal of 131512254 is 452215131.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131512253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148497 + ... + 149379.

It is an arithmetic number, because the mean of its divisors is an integer number (8343192).

Almost surely, 2^131512254 is an apocalyptic number.

131512254 is an abundant number, since it is smaller than the sum of its proper divisors (135469890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131512254 is a wasteful number, since it uses less digits than its factorization.

131512254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232.

The product of its digits is 1200, while the sum is 24.

The square root of 131512254 is about 11467.8792285235. The cubic root of 131512254 is about 508.5364344974.

Adding to 131512254 its reverse (452215131), we get a palindrome (583727385).

The spelling of 131512254 in words is "one hundred thirty-one million, five hundred twelve thousand, two hundred fifty-four".